Kansas Aphididae, with Catalogue of North American Aphididae and Host-Plant and Plant-Host List

Kansas Aphididae, with Catalogue of North American Aphididae and Host-Plant and Plant-Host List

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 edition. Excerpt: ...as far, but most always extending as far as do the antennae., Prothorax light brown, except the cephalic margin, which is black; lateral tubercles well developed and prominent. Thoracic sclerites black, membrane lighter in color. Wings nearly hyaline, veins dark. Stigma brownish black, 0.09 mm. broad and 0.45 mm. long. Total wing expansion, 3.70 mm. Legs nearly uniform in color, being pale yellow; tibia and tarsi a shade lighter and slightly hirsute. Abdomen pale brown, with two tubercles caudad the honeytubes about the size of the lateral tubercles. Honey-tubes cylindrical and imbricated, 0.25 mm. long, or about twice the length of the tarsi. Style concolorous with the abdomen, hirsute, also armed with short spines. It is bluntly rounded at the distal end and 0.09 mm. long, or a little less than one-half the length of the honey-tubes. Total length of the body, 1.18 mm. This form was taken July 9, on iron weed ( Vernonia baldwini). It is gregarious, and colonizes the tender terminal growing parts. This form is similar to the genus Sipha in size, shape, and especially in the construction of the third and fourth antennal joints, inasmuch as they are not as distinctly divided as is common in the genus Aphis, but appear as a gradation between the two genera. Aphis. Plate V, fig. 35. Head black. Antennae dark, imbricated, and almost naked; length of segments: I, 0.09 mm.; II, 0.05 mm.; III, 0.36 mm.; IV, 0.23 mm.; V, 0.18 mm.; VI, 0.09 mm.; VII, 0.34 mm.; total length, 1.30 mm., or extending to near the center of the abdomen. Sensoria circular, fifteen to twenty on the third joint, ten to twelve on the fourth, usually two or three on the fifth, and a cluster of four or five at the distal end of the sixth. Eyes black; ocular tubercles prominent, tinged...show more

Product details

  • Paperback | 46 pages
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236625102
  • 9781236625106